1 First of all, there is no "0 th century AD", so when 50 AD is the first century AD and 150 AD is the second century AD, similarly, 50 BC is the first century BC and 150 BC is the second century BC.

According to the ten digits of this year to determine the age, for example, 1234 is11930s.

It's easy to tell the early and late AD, but it's the other way around in BC.

So the answer to the question is:

In the early 1970s BC.

14th century A.D.

3. The first year of A.D. is 1, which corresponds to the first year of Yuan Dynasty in the late Western Han Dynasty in China.

According to records, in 1 year, 9-year-old Han Ping Emperor Liu Kan ascended the throne. Wang Mang, a 46-year-old Fu, assisted the imperial court and added officials as teachers. He was honored as a "public" and added 28,000 cities.

In June of this year, Wang Mang strongly admired and respected Confucius, and through his son Emperor Han Ping, he issued an imperial edict and named Confucius "Emperor Xu Anni", and Confucius officially sat on the altar of national saints.

Five years later, Wang Mang poisoned Emperor Han Ping. ...

The Han Dynasty was 202 BC-220 AD.

When the Western Han Dynasty perished in 8 AD, Wang Mang forced the obedient baby to abdicate and set up a new dynasty.

The Eastern Han Dynasty ended in 220. This year, Cao Pi forced him to abdicate and changed his name to Wei, claiming that the Eastern Han Dynasty perished.

4. About. . . More than 800 years.

5. China adopted the Gregorian calendar month and day (19 12) one year after the Revolution of 1911, but at the same time adopted the year of the Republic of China.

6. There may be 17 rulers in Xia Dynasty, and the title of emperor began in Qin Dynasty. The Xia Dynasty was founded about 2 1 century BC, and it lasted about 400 years, about 2 146 BC-0/675 BC.

7.3 1 year ago

8。 In the early 1970s BC.

9. In the late 1970s.

10. There are 442 years.

1 1. According to the unified statement, it has existed for 2 10 years.

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